Band-knife splitting-machine.



G. A. HIRTH.

BAND KNIFE SPLITTING MACHINE.

APPLIUATIQN FILED AUG. 16, 1909.

Patented July 30, 1912.

COLUMBIA PLANOGRAPH co..WAsmNGTON. D. c,

CARL ALBERT BIRTH, OF STUTTGART-CANNSTATT, GERMANY.

BAND-KNIFE SPLITTING-MAGI-IINE.

Patented July 30, 1912.

Application filed August 16 1909. Serial No. 513,052.

To all whom it may concern:

Be it known that I, CARL ALBERT HIRTH, a citizen of the German Empire,residing at Stuttgart-Cannstatt, in the Kingdom of Wurttemberg, Empireof Germany, have in vented certain new and useful Improvements inBand-Knife Splitting-Machines;

and I do hereby declare the following to be v ll) a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

This invention relates to a machine having a band knife for splitting orcutting materials such as leather, felt, lpasteboard or the like.

The novelty of the invention consists in that the mechanism for feedingforward the material is arranged on a frame, which may be turned andadjusted at right angles to the direction of movement of the band knife.By this arrangement the thickness of the part to be severed or split maybe suitably adjusted and an oblique cut may be obtained, such as isdesirable, for instance, in

driving belts which are to be sewn together with the beveled endsoverlapping.

The invention also allows of easy access to the band knife and thefeeding mechanism.

The invention is diagrammatically shown in one form of construction asan example in the accompanying drawings :-Figure 1 being a front view;and Fig. 2, a side view of the machine.

The band knife a which is carried by pulleys b 0 supported on themachine frame, is arranged with its cutting edge opposite the mechanismfor feeding or pushing forward the material to be cut, which mechanismconsists, for instance, of two rollers d e.

The feeding mechanism is according to this invention arranged so that itcan be turned, and also adjusted as regards height. In the example ofconstruction shown the feeding mechanism is carried by a plate 7", whichrests by means of an arched rib 9 provided on it, on a suitably curvedbar 2' of a plate It. The plate f is provided with a recess 72 forallowing the workpiece to pass, and may be turned, and be fixed in itsactual position by a clamp screw Z. The plate 71, is releasably mountedon a plate at connected by a hinge on with the machine frame and may beadjusted in height and fixed by the clamp screw 0 in any suitableposition, and the plates h and n constitute a support for the plate fand for the feed rollers cl, 6. The plate a is held fast or fixed on themachine frame by the bolt p and nut When renewing the band knife orcleaning the feeding mechanism, the nut g is unfastened, so that theplate together with the parts carried by it, may be tilted up causingthe band knife and also the feeding device to be fully exposed oruncovered.

The adjustment of the plates 7 and h by means of slot and screw ispreferably where, after the lmife is once adjusted, it is to be used fora long time in the same way. Where a. frequent change in the kind ofworkpiece to be operated on is to be expected, it is advisable toarrange the one plate, for instance, so as to be revoluble by means of aworm and worm wheel, on a carriage adapted to be vertically adjusted andfixed, which carriage, as usual, may be moved by means of a screwspindle or toothed wheel.

I declare that what I claim is 1. Ina machine of the class described, abase; two pulleys supported by said base; a traveling band knifeextending about said pulleys; a support hinged to said base; means forsecuring said support in a fixed position relative to said base; a pairof feed rollers; a plate whereby said feed rollers are carried, the samebeing secured to the upper end of said support; and means whereby saidplate may be adjusted about an axis extending transverse to the plane ofmovement of said knife.

2. In a machine of the class described, a base; two pulleys supported bysaid. base; a traveling band knife extending about said pulleys; asupport hinged to said base, said support having an arched rib at itsupper end; means for securing said support in a fixed position relativeto said base; a pair of feed rollers; a plate whereby said feed saidsupport in a fixed position relative to said base; a pair of feedrollers; a plate whereby said feed rollers are carried, said platehaving a curved bar adapted to cooperate With the arched rib upon saidsupport; and means for securing said plate in position upon the upperend of said frame.

In testimony whereof I afiix my signature, in presence of two Witnesses.

CARL ALBERT HIRTI-I.

WVitnesses JEAN GULDEN, HERMANN I-IoPPE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. 0.?

